unique items from 2 list code example

Example 1: python add unique to list

myList = ['Arise', 'But', 'It', 'Juliet', 'Who', 'already', 'and', 'and', 'and', 
     'breaks', 'east', 'envious', 'fair', 'grief', 'is', 'is', 'is', 'kill', 'light', 
     'moon', 'pale', 'sick', 'soft', 'sun', 'sun', 'the', 'the', 'the', 
     'through', 'what', 'window', 'with', 'yonder']

auxiliaryList = []
for word in myList:
    if word not in auxiliaryList:
        auxiliaryList.append(word)

Example 2: find unique values between multiple array

var array3 = array1.filter(function(obj) { return array2.indexOf(obj) == -1; });